Arch buckle cable mounting system in cable-stayed buckle hanging method construction and construction method of arch buckle cable mounting system

Abstract

The invention provides an arch buckle cable mounting system and a construction method thereof in cable-stayed buckling method construction, the system comprises a cantilever arch rib structure, a support portal, a cable guide, a traction cable system and a power system, the support portal is provided with the traction cable system, one end of the traction cable system is connected with the power system, and the other end of the traction cable system is connected with the cable guide; the power system and the rope guide are located on the two sides of the supporting portal respectively. The supporting portal and the rope guide are both fixed to the cantilever arch rib structure in a bridging mode. The supporting door frame fixes the spatial position through a positioning rope, is arranged on an installed cantilever arch rib structure and provides a supporting point for the traction cable system; the buckle cable is installed from the arch foot position to the buckle point position, so that the mode that the buckle cable on the arch rib is manually installed is replaced, the manual input of buckle cable installation is effectively reduced, and the construction cost is greatly saved.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction and maintenance technology, and specifically relates to an arch cable installation system and its construction method in the cable-stayed bridge construction method. Background Technology

[0002] Cable hoisting and inclined cable-stayed method is an important method for achieving self-balancing cantilever construction of arch bridges. This construction method mainly uses a cable crane to lift the arch rib segment to the installation position, and then uses cable-stayed anchors to anchor the arch rib segment. The tension of the cable-stayed anchors replaces the lifting effect of the cable crane on the arch rib segment, thus forming a self-balancing structural system during the construction process.

[0003] In traditional inclined cable-stayed construction, the installation of arch rib anchor cables typically involves a small circulation system comprising wire ropes, fixed pulleys, and a power unit. The installation of the cable-stayed ties on the arch rib is usually carried out using the maintenance access on the rib, employing intensive labor-intensive pulling. As the cantilever construction of the arch rib progresses, the length, weight, and installation height of the cable-stayed ties increase, resulting in high construction risks, low efficiency, and high costs. Therefore, a new, efficient, and safe arch cable-stayed ties installation system and construction control method are urgently needed to solve these problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an arch-mounted cable-stayed system and its construction method for use in inclined cable-stayed construction. The cable-stayed system is installed by setting up a reusable, reciprocating circulation system on the arch rib. Its key feature is that the supporting gantry in the cable-stayed system is a prefabricated, lightweight structure, allowing for convenient and quick dismantling and installation at height on the arch rib. Furthermore, the cable-stayed traction installation is highly efficient and does not conflict with the spatial position of existing structures.

[0005] The technical solution of the present invention is as follows: an arch-mounted cable installation system for the inclined cable-stayed construction method, comprising a cantilever arch rib structure, a support gantry, a guide cable, a traction cable system, and a power system. The traction cable system is installed on the support gantry, with one end of the traction cable system connected to the power system and the other end connected to the guide cable. The power system and the guide cable are located on both sides of the support gantry. The support gantry and the guide cable are both bridging and fixed to the cantilever arch rib structure.

[0006] Furthermore, both the supporting gantry and the guide rope include a supporting gantry crossbar and a pulley block, with the pulley block installed on the supporting gantry crossbar.

[0007] Furthermore, the supporting gantry also includes two gantry uprights, and the supporting gantry crossbars and pulley blocks are two sets, arranged parallel to each other between the two gantry uprights; each gantry upright includes a supporting gantry upright end member and a supporting gantry upright standard member, the supporting gantry upright end member is provided with a connecting lug plate and is connected to the upper lug plate of the cantilever arch rib structure by a pin, and the supporting gantry upright standard member is inserted into the upper end of the supporting gantry upright end member.

[0008] Furthermore, the support gantry is fixedly arranged on the segmental arch ribs of the cantilever arch rib structure, and the support gantry is fixed in spatial position by positioning ropes to provide support points for the traction cable system.

[0009] Furthermore, the positioning rope is a steel wire rope, with one end fixed to the upper ear plate of the arch and the other end fixed to the end member of the supporting gantry upright.

[0010] Furthermore, the traction cable system consists of a traction cable and pulleys. One end of the traction cable wire rope is wound around the pulley block of the winch, support gantry and guide cable of the power system, and the other end is connected to the winch through the pulleys.

[0011] Furthermore, the power system includes a winch, a cable reel, and a winch and reel foundation, wherein the winch and the cable reel are both anchored to the winch and reel foundation; the cable reel is located at the unwinding end of the winch.

[0012] Furthermore, the present invention also provides a construction method for an arch-mounted cable-stayed system in the inclined-stayed cable-stayed construction method, using any of the above-described inclined-stayed cable-stayed system, comprising the following steps: S1. Preparations before construction; S2. Install the power system at the arch foot of the cantilever arch rib structure; S3. Install an assemblable support frame on the arch rib of the cantilever arch rib structure. S4. Install and test the traction cable system; S5. Use the power system to pull the traction cable of the traction cable system to install the buckle.

[0013] Furthermore, in the construction method of the arch-mounted cable-stayed system in the inclined cable-stayed construction method, step S1 includes the following steps: S11. The construction access road is built to the arch foot construction area, the site is leveled, and a reasonable location is selected to set up the winch and cable tray foundation. The principle of setting up the foundation location is to facilitate the traction of the cable to the end of the cantilever arch rib structure and the top of the tower. S12. Inspection of the foundation for the arch ear plate, positioning rope, support gantry uprights, support gantry crossbars, pulley block, winch, traction rope, cable tie steel strand reel, cable tie steel strand, cable clamp, and winch and cable reel.

[0014] Furthermore, in the construction method of the arch-mounted cable-stayed system in the inclined cable-stayed construction method, step S2 includes the following steps: S21. Excavation of the slope at the arch foot of the cantilever arch rib structure. During the excavation process, the slope angle, flatness and base elevation must be strictly controlled. S22. Tie the reinforcing steel bars for the winch and cable reel foundation, install the embedded parts, and pour the concrete for the winch and cable reel foundation after formwork is erected. S23. Install the winch and cable reel on the foundation of the winch and cable reel.

[0015] The technical effects of this invention are as follows: The cable-stayed installation system for arch ribs in the inclined cable-stayed construction method of this invention can efficiently install the cables on the arch ribs, reduce the workload of the working crane during construction, and replace the manual installation of cables on the arch ribs, effectively reducing the labor input for cable installation and greatly saving construction costs. Furthermore, it can be transported using small construction machinery, making it convenient and quick, and improving construction efficiency.

[0016] The support frame of this invention is an assemblable support frame, composed of end members of the support frame uprights and standard members of the support frame uprights. It can be adjusted according to the required support height. The end members of the support frame uprights are provided with connecting lugs that are connected to the lugs on the arch via pins. The two ends of the standard members of the support frame uprights can be matched with each other, with one end inserted into the other end and securely fixed, which facilitates the disassembly and installation of the frame. It is convenient for transportation and disassembly during high-altitude operations in cantilever construction of arch ribs.

[0017] This invention provides an arch-mounted cable-stayed system and its construction method for use in inclined cable-stayed construction. A supporting gantry is fixed in spatial position by positioning ropes and positioned on the installed arch rib segments, providing support points for the traction cable system. The traction cable, composed of steel wire rope, is wound around pulleys on a winch, the supporting gantry, and the cable guide, with the winch providing power to the circulation system. This invention uses a modular traction cable system to install the cable-stayed system from the arch foot to the fastening point, thus replacing the manual installation method on the arch ribs, effectively reducing labor input for cable-stayed installation and significantly saving construction costs.

[0018] The following will provide further explanation in conjunction with the accompanying drawings. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall elevation of the arch-mounted cable installation system in the construction of the inclined cable-stayed method of the present invention; Figure 2 This is a schematic diagram of the supporting gantry structure of the present invention; Figure 3 This is a schematic diagram of the structure of the guide cable of the present invention; Figure 4 This is a schematic diagram of the end members of the support gantry upright of the present invention; Figure 5 This is a schematic diagram of the standard support member for the gantry upright of the present invention; Figure 6 This is a schematic diagram of the structure of the upper ear plate of the present invention; Figure 7 This is a schematic diagram of the power system and the cable reel of the present invention; Reference numerals: 1. Supporting gantry; 2. Guide cable; 3. Traction cable system; 4. Power system; 5. Arch upper ear plate; 6. Positioning rope; 7. Buckle cable; 8. Buckle tower; 9. Cantilever arch rib structure; 10. Supporting gantry upright; 11. Supporting gantry crossbar; 12. Pulley block; 13. End member of supporting gantry upright; 14. Standard member of supporting gantry upright; 15. Winch; 16. Traction cable; 17. Buckle cable steel strand reel; 18. Connecting ear plate; 19. Cable clamp; 20. Winch and cable reel foundation. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0021] like Figure 1 As shown, an arch-mounted cable installation system for the inclined cable-stayed construction method includes a cantilever arch rib structure 9, a support gantry 1, a cable guide 2, a traction cable system 3, and a power system 4. The traction cable system 3 is installed on the support gantry 1, with one end connected to the power system 4 and the other end connected to the cable guide 2. The power system 4 and the cable guide 2 are located on both sides of the support gantry 1. The support gantry 1 and the cable guide 2 are both bridging and fixed to the cantilever arch rib structure 9.

[0022] In actual use, the support gantry 1 of the present invention serves as a support structure set on the cantilever arch rib structure 9, and together with the guide cable 2, provides a support point for the traction cable system 3 to meet the space requirements for the installation of the buckle cable 7. Power is provided by the winch 15 to realize the traction of the buckle cable 7 from the arch foot position of the cantilever arch rib structure 9 to the buckle point position. Example 2

[0023] Based on Example 1, such as Figure 2 and Figure 3 As shown, both the support gantry 1 and the guide rope 2 include a support gantry crossbar 11 and a pulley block 12, with the pulley block 12 disposed on the support gantry crossbar 11.

[0024] The supporting gantry 1 also includes two gantry uprights 10. The supporting gantry crossbars 11 and pulley blocks 12 are two sets, arranged parallel to each other between the two gantry uprights 10. Each gantry upright 10 includes a supporting gantry upright end member 13 and a supporting gantry upright standard member 14. The supporting gantry upright end member 13 is provided with a connecting lug 18, which is connected to the upper lug 5 of the cantilever arch rib structure 9 by a pin. The supporting gantry upright standard member 14 is inserted into the upper end of the supporting gantry upright end member 13.

[0025] Preferably, the two ends of the two supporting gantry crossbars 11 are fixed between the two gantry uprights 10, and both ends of the two supporting gantry crossbars 11 have ear plates to facilitate connection with the gantry uprights 10 by means of pins.

[0026] Furthermore, such as Figure 4 and Figure 5 As shown, the standard member 14 of the supporting gantry upright and the end member 13 of the supporting gantry upright are connected at both ends and are mutually matched. One end can be inserted into the other end and is firmly fixed, which facilitates the disassembly and installation of the gantry. This structure realizes the function of an assemblable supporting gantry.

[0027] In practical use, the support gantry 1 of this invention can provide a support point for the traction cable 3 wire rope, avoiding spatial positional conflict between the traction cable 3 wire rope and the cantilever arch rib structure 9. The pulley block 12 installed on it can make the traction process smoother. The standard members 14 of the support gantry uprights facilitate the transportation, disassembly and installation of the gantry on the arch rib cantilever structure 9. Example 3

[0028] Based on Example 2, further, as follows: Figure 3 As shown, the guide cable 2 includes a supporting gantry crossbar 11 and a pulley block 12; the pulley block 12 is disposed on the supporting gantry crossbar 11; it is used for steering the traction cable system 3, and the guide cable 2 is fixed to the end of the cantilever arch rib structure 9; wherein, the two ends of the supporting gantry crossbar 11 are fixed between the cantilever arch rib structures 9.

[0029] In actual use, the guide cable 2 of the present invention is located at the end of the cantilever arch rib structure 9. It is mainly used for the turning of the steel wire rope of the traction cable system 3. Together with the support gantry 1, it provides a force support point for the traction system on the cantilever arch rib structure 9. The position of the guide cable 2 is the end point of the traction of the buckle 7.

[0030] Furthermore, the support gantry 1 is fixedly arranged on the segmental arch rib of the cantilever arch rib structure 9, and the support gantry 1 is fixed in spatial position by the positioning rope 6 to provide a support point for the traction cable system 3.

[0031] Furthermore, as shown in Figure 6, the positioning rope 6 is a steel wire rope. One end of the positioning rope 6 is fixed to the upper ear plate 5 of the arch, and the other end is fixed to the end member 13 of the supporting gantry upright, so as to fix the supporting gantry upright 10, limit its large displacement, and ensure that the traction process is carried out in a balanced and smooth manner.

[0032] Furthermore, there are multiple supporting gantry frames 1, preferably two supporting gantry frames 1. Example 4

[0033] Based on Example 2 or Example 3, such as Figure 7 As shown, the traction cable system 3 consists of a traction cable 16 and pulleys. One end of the traction cable 16 is wound around the winch 15 of the power system 4 and the pulley block 12 of the supporting gantry 1 and the guide cable 2, and the other end is connected to the winch 15 through the pulleys.

[0034] Furthermore, a cable clamp 19 is provided on the traction cable 16, which is used to anchor the installation cable 7. Power is provided by the winch 15 to install the installation cable 7 from the arch foot position of the cantilever arch rib structure 9 to the fastening point position.

[0035] Preferably, the traction cable 16 is a steel wire rope.

[0036] Furthermore, such as Figure 7 As shown, the power system 4 includes a winch 15, a cable reel 17, and a winch and cable reel foundation 20, wherein the winch 15 and the cable reel 17 are both anchored on the winch and cable reel foundation 20; the cable reel 17 is located at the unwinding end of the winch 15.

[0037] In practical use, the traction cable system 3 of this invention is the core of the entire system. The traction cable 16 is wound around the pulley block 12 of the winch 15, the supporting gantry 1, and the guide cable 2. The cable clamp 19 is used to anchor the buckle cable 7. The traction system 3 pulls the buckle cable 7 to the installation position through its cyclical movement. The power system 4 of this invention provides power for the cyclical movement of the traction cable 16. The winch and cable reel foundation 20 provide anchoring force for the winch 14, ensuring its smooth operation during traction. The cable reel 17, in conjunction with the traction system 3, stably releases the buckle cable 7. Example 5

[0038] The construction method for the arch-mounted cable-stayed system in any of the inclined cable-stayed methods described in Examples 1-4 includes the following steps: S1. Preparations before construction; S2. Install the power system 4 at the arch foot of the cantilever arch rib structure 9; S3. Install the assemblable support frame 1 on the arch rib of the cantilever arch rib structure 9. S4. Install and debug the traction cable system 3; S5. Use the power system 4 to pull the traction cable 16 of the traction cable system 3 to install the buckle cable 7.

[0039] Furthermore, S1 includes the following steps: S11. The construction access road is built to the arch foot construction area, the site is leveled, and a reasonable location is selected to set up the winch and cable tray foundation 20. The principle of setting up the foundation location is to facilitate the traction of the cable 7 in two directions: to the end of the cantilever arch rib structure 9 and the top of the tower 8. S12, arch ear plate 5, positioning rope 6, support gantry upright 10, support gantry crossbar 11, pulley block 12, winch 15, traction cable 16, cable reel 17, cable 7, cable clamp 19, and winch and cable reel foundation 20 are inspected upon arrival at the site.

[0040] Furthermore, S2 includes the following steps: S21. Excavation of the slope at the arch foot of the cantilever arch rib structure 9. During the excavation process, the slope angle, flatness and base elevation are strictly controlled. S22, tie the 20mm steel bars for the winch and cable reel foundation, install the embedded parts, and pour the 20mm concrete for the winch and cable reel foundation after formwork; S23. Install the winch 15 on the winch and cable reel foundation 20, and install the cable steel strand reel 17.

[0041] The S3 mentioned above includes the following steps: S31. According to the requirements of support height and position, assemble the support frame upright 10. The end member 13 of the support frame upright is provided with a connecting ear plate 18, which is connected to the upper ear plate 5 through a pin. The standard member 14 of the support frame upright and the end member 13 of the support frame upright are matched at both ends. One end can be inserted into the other end and is fixed firmly, which facilitates the disassembly and installation of the frame. S32. Fix the installed support frame upright 10 with positioning rope 6. One end of positioning rope 6 is fixed to the upper ear plate 5 of the arch, and the other end is fixed to the end member 13 of the support frame upright. S33. Install the crossbar 11 supporting the gantry frame. All members are connected by pre-set ear plate pins. S4 includes the following steps: S41. Wind the traction cable 16 around the pulley block of the winch 15, the supporting gantry 1, and the guide cable 2; S42. The winch 15 is used to circulate the traction cable 16 to check whether the system is running smoothly and stably, and the length of the positioning rope 6 is adjusted to ensure that the support gantry 1 is supported stably. S5 includes the following steps: S51. Connect one end of the buckle 7 to the traction cable 16 via the cable clamp 19; S52. Use the power installation system 4 to pull the traction cable 16 in a cycle, pulling the buckle 7 to the target position.

[0042] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable-stayed installation system for an arch in a diagonal-stayed construction method, comprising a cantilever arch rib structure (9), characterized in that: It also includes a support gantry (1), a guide cable (2), a traction cable system (3) and a power system (4). The traction cable system (3) is installed on the support gantry (1). One end of the traction cable system (3) is connected to the power system (4), and the other end is connected to the guide cable (2). The power system (4) and the guide cable (2) are located on both sides of the support gantry (1). The support gantry (1) and the guide cable (2) are both fixed across the cantilever arch rib structure (9).

2. The arch-mounted cable installation system for the inclined cable-stayed construction method according to claim 1, characterized in that: The support gantry (1) and the guide rope (2) both include a support gantry crossbar (11) and a pulley block (12), with the pulley block (12) arranged on the support gantry crossbar (11).

3. The arch-mounted cable installation system for the inclined cable-stayed construction method according to claim 2, characterized in that: The supporting gantry (1) also includes two gantry uprights (10). The supporting gantry crossbar (11) and pulley block (12) are two sets, which are arranged in parallel between the two gantry uprights (10). Each gantry upright (10) includes a supporting gantry upright end member (13) and a supporting gantry upright standard member (14). The supporting gantry upright end member (13) is provided with a connecting ear plate (18) which is connected to the upper ear plate (5) of the cantilever arch rib structure (9) by a pin. The supporting gantry upright standard member (14) is inserted into the upper end of the supporting gantry upright end member (13).

4. The arch-mounted cable installation system for the inclined cable-stayed construction method according to claim 3, characterized in that: The support gantry (1) is fixedly arranged on the segmental arch rib of the cantilever arch rib structure (9). The support gantry (1) is fixed in space by the positioning rope (6) to provide a support point for the traction cable system (3).

5. The arch-mounted cable installation system for the inclined cable-stayed method of construction according to claim 4, characterized in that: The positioning rope (6) is a steel wire rope. One end of the positioning rope (6) is fixed to the upper ear plate (5) of the arch, and the other end is fixed to the end member (13) of the support frame upright.

6. The arch-mounted cable installation system for the inclined cable-stayed construction method according to claim 1, characterized in that: The traction cable system (3) consists of a traction cable (16) and pulleys. One end of the traction cable (16) is wound around the winch (15) of the power system (4) and the pulley block (12) of the support gantry (1) and the guide cable (2), and the other end is connected to the winch (15) through the pulleys.

7. The arch-mounted cable installation system for the inclined cable-stayed construction method according to claim 1, characterized in that: The power system (4) includes a winch (15), a cable reel (17), and a winch and cable reel foundation (20), wherein the winch (15) and the cable reel (17) are both anchored on the winch and cable reel foundation (20); the cable reel (17) is located at the unwinding end of the winch (15).

8. A construction method for an arch-mounted cable-stayed system in a cable-stayed construction method, using any one of the arch-mounted cable-stayed systems described in claims 1-7, characterized in that: Includes the following steps: S1. Preparations before construction; S2. Install the power system (4) at the arch foot of the cantilever arch rib structure (9); S3. Install the assemblable support frame (1) on the arch rib of the cantilever arch rib structure (9); S4. The traction cable system (3) is installed and debugged; S5. Use the power system (4) to pull the traction cable (16) of the traction cable system (3) to install the buckle (7).

9. The construction method of the arch-mounted cable-stayed system in the inclined cable-stayed construction method according to claim 8, characterized in that: The S1 includes the following steps: S11. The construction access road is built to the arch foot construction area, the site is leveled, and a winch and cable tray foundation (20) is set up in a reasonably located area. The principle of setting up the foundation is to facilitate the traction of the cable (7) to the end of the cantilever arch rib structure (9) and the top of the tower (8). S12, arch ear plate (5), positioning rope (6), support gantry upright (10), support gantry crossbar (11), pulley block (12), winch (15), traction rope (16), cable reel (17), cable (7), cable clamp (19) and winch and cable reel foundation (20) are inspected upon arrival.

10. The construction method of the arch-mounted cable-stayed system in the inclined cable-stayed construction method according to claim 8, characterized in that: The S2 includes the following steps: S21. Excavation of the slope at the arch foot of the cantilever arch rib structure (9). During the excavation process, the slope inclination angle, flatness and base elevation are strictly controlled. S22, Bind the reinforcing steel of the winch and cable reel foundation (20), install the embedded parts, and pour the concrete of the winch and cable reel foundation (20) after formwork; S23. Install the winch (15) and the cable reel (17) on the winch and cable reel foundation (20).

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